Improvement in valves for stop-cocks



UNITED STATEs` PATENT OEEIGE.

JOSIAH W. CARNEY, OF OHARLESTOWN, MASSACHUSETTS.

IMPROVEMENT IN VALVES FORA STOP-COCKS.

l Specification forming part of Letters Patent No. 106,121, dated August9, 1870.

Vto which my improvement has been attached,

taken through the line a: x, Fig. 2. Fig. 2 is a A top view ofthe same,partly in section, through the line y y, Fig. 1.

Similar letters of reference indicate corresponding parts.

My invention has for its object to furnish i an improved springattachment for the valvestems of step-valves, stop-cocks, faucets, 8vo.,which shall be simple in construction, will make the valve self-closing,and which may be attached to valves already in use withoutdisturbing theplumbing; and it consists in the construction and combinationl of thespring and its attachments with the stem of the valve, as hereinaftermore fully described. A and B arel the inlet and outlet pipes. C is theglobe or hopper. D is the valve. E is the valve-stem, and F is thehandle of the valve, about the construction of which parts there isnothing new.

Upon the upper part of the valve D is cut a screw-thread, which screwsinto a screwthread in the upper part of the globe C, where it is securedin place by a cap-nut, G, through a hole in the center of which thevalve-stem E passes.

His a flanged drumA placed upon and secured to the stem E, and to whichis secured one end of the iiat spring I. The spring I is wound aroundthe drum H, and its other end has an eye or socket formed upon orattached to it, through which passes a stud or post, J, attached to somesuitable support. and which is made of such a length that the end of thespring I may move up and down upon it as the stem E rises and descendsin opening and closing the valve.

By this construction, when the valve-stem is screwed up to open thevalve the spring I will be coiled around the drum II, and when the saidvalve-stem is released the elasticity 0f the spring I will at once turnthe stem E back and force the valve D down to its seat, closely closingit.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- The arrangement of the stud J, spring I, and llangeddrum H, with respect to a valveshaft, E, as and for the purposedescribed.

JosIAH w. CAENY.

Witnesses:

WILLIAM HUNNEWELL, S. W. GHAsE.

